Accurate Velocity and Positioning

The ARMS family of stages provides excellent velocity and positioning control. When coupled with Aerotech’s advanced controls, resolution can be as fine as 0.02 arc second, with accuracy to ±2.5 arc second and repeatability to ±0.5 arc second. The motor and high-performance rotary encoder are directly coupled to a common shaft. The absence of gear trains and mechanical couplings means no position errors caused by hysteresis, windup or backlash. The ARMS-260 has rate resolution down to 0.001 deg/s and rate stability to 0.0001%.

Superior Mechanical Design

Dual large-diameter bearings are used to maximize performance with respect to wobble, moment stiffness and repeatability. The large diameter bearings permit large payloads without compromising performance.

Brushless Direct-Drive

The ARMS series utilizes Aerotech's S-series brushless, slotless motor to maximize positioning performance. The S-series motor provides all of the advantages of a brushless direct-drive motor – no brushes to wear, no gear trains to maintain and high acceleration and high speeds. The slotless, ironless design eliminates cogging and, therefore, produces absolutely no torque ripple. With its low inherent inertia and optimized motor design, the ARMS is capable of speeds and accelerations that are significantly higher than competing products. Low inertia and zero backlash make the ARMS the ideal solution for applications requiring frequent directional changes.

Flexible Configurations

Slip rings and rotary unions are standard options available to ease integration of customer devices. With various tabletop styles as well as optional HDP pedestals, customers can also tailor the mechanical interface of the ARMS stages to suit many different needs.

Advanced User-Friendly Controls

Aerotech rate tables are controlled with state-of-the-art Aerotech controls and drives. Our software packages are available as stand-alone applications, where no other language or compiler is needed, as well as LabVIEW®, C and .NET software interfaces. Users can graphically generate their own motion profiles and execute them automatically with Aerotech's GUI Motion Designer software. Or, for users who already have their own motion simulation software, our software can easily accept files with arrays of velocity, position and acceleration versus time profiles. This is then downloaded and run on the ARMS by our motion control software.

Specifications

ARMS Specifications

ARMS Series

ARMS150-M1

ARMS150-M2

ARMS200-M1

ARMS200-M2

ARMS260-M1

ARMS260-M2

Width

146 mm

196 mm

260 mm

Height(1)

183 mm

246 mm

224 mm

249 mm

229 mm

250 mm

Aperture(2)

8 mm

25 mm

Total Travel

±360° Continuous

Bus Voltage

Up to 340 VDC

Maximum Torque (Continuous)

2.36 N·m

7.69 N·m

11.12 N·m

15.93 N·m

19.71 N·m

29.09 N·m

Fundamental Encoder Resolution

16,200 lines/rev

23,600 lines/rev

32,400 lines/rev

Accuracy(3)

±2.5 arc sec

Repeatability

±0.5 arc sec

Max Load(4)

Axial

30 kg

140 kg

230 kg

Max Load(4)

Moment

175 N·m

425 N·m

650 N·m

Tilt Error Motion

±1 arc sec

Maximum Rate(5)

1500°/s

Minimum Rate(6)

0.002°/s

0.001°/s

Rate Resolution(6)

0.002°/s

0.001°/s

Rate Stability(6)

Over 360°

0.0001%

Over 10°

0.005%

Over 1°

0.05%

Peak Acceleration(7)

>20,000°/s2

Inertia (unloaded)(7)

6,600 kg·mm2

9,700 kg·mm2

33,600 kg·mm2

39,800 kg·mm2

115,200 kg·mm2

139,000 kg·mm2

Total Mass(7)

9 kg

15 kg

22 kg

26 kg

39 kg

44 kg

Servo Bandwidth(8)

>70 Hz (3 dB)

Material

Aluminum

Stage Finish

Black Anodize

Tabletop Finish

Hard Coating (62 Rockwell Hardness)

Height may vary with certain slip ring and rotary union options. See product dimensional drawings for more details.

Aperture not available with all slip ring and rotary union options. See ordering information for more details.

Certified with each stage. Requires the use of an Aerotech controller.

Maximum loads are mutually exclusive.

Maximum rate is based on stage capability. Actual rate may depend on encoder resolution, load, amplifier bus voltage, and motor. See the S-series rotary motor for more information.

Minimum rate, rate resolution and rate accuracy are based on stage capability. Actual rate, resolution and accuracy may depend on encoder resolution.

Peak acceleration, inertia and total mass based on unloaded stage with standard diameter tabletop.

Servo bandwidth is based on unloaded stage with standard diameter tabletop. Actual bandwidth may depend on mass and inertia of stage payload.

Mounting Pedestal (Optional)

Option

Description

-HDP

Mounting pedestal with adjustable, hard-mount capable leveling feet

Integration (Required)

Aerotech offers both standard and custom integration services to help you get your system fully operational as quickly as possible. The following standard integration options are available for this system. Please consult Aerotech if you are unsure what level of integration is required, or if you desire custom integration support with your system.

Option

Description

-TAS

Integration - Test as systemTesting, integration, and documentation of a group of components as a complete system that will be used together (ex: drive, controller, and stage). This includes parameter file generation, system tuning, and documentation of the system configuration.

-TAC

Integration - Test as componentsTesting and integration of individual items as discrete components. This is typically used for spare parts, replacement parts, or items that will not be used or shipped together (ex: stage only). These components may or may not be part of a larger system.